Saw-handle clamp.



No. 698,936. Patented Apr. 29, i902.

J. A. HALE.

SAW HANDLE CLAMP.

A umiim filed Aug. 20, 1901.

(No Model.)

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UNITED STATES PATE T FFiCE.

JOHN ALBERT HALE, or ROCKVILLE, INDIANA.

SAW-HANDLE CLAM P.

SPECIFICATION forming part of Letters Patent No. 698,936, dated April29, 1902.

Application filed August 20, 1901. Serial No. 72,689. (No model.)

To all whom it may concern:

Be it known that 1, JOHN ALBERT HALE, a citizen of the United States,and a resident of Rockville, in the county of Parke and State ofIndiana, have invented a new and Im proved Saw-Handle Clamp, of whichthe following is a full, clear, and exact description.

This invention relates to a class of handles that are attachable to theends of hand-operated crosscut or ripping saws, and has for its objectto provide a novel device of the indicated character which is verysimple, is readily attachable or removable from the sawblade, and whichwill reliably hold the sawblade in connection with the handles.

The invention consists in the novel construction and combination ofparts, as is hereinafterdescribed,and definedin the appended claims.

Reference isto be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is aside view of the improvement applied upon one end of asaw-blade. Fig. 2 is a plan view of the device holding a sawblade andhandle therefor, the handle being in section; and Fig. 3 is alongitudinal sectional view showing the clam ping device adj usted torelease the saw-blade.

The saw-blade 10 may have any preferred form of teeth, and near each endthereof the teeth C6 are dispensed with, affording a stub end at eachextremity of the saw-blade for engagement of the novel handle-securingdevices. The saw-handle clamps for each end of the saw-blade beingsimilar, the illustration and description of one of said devices willserve for both, and, as shown, comprises the following details:

Two clamping jaws 11 12 are provided, which are perforated near theircenters in alinement, these transverse holes receiving the bolt 13,having a head 13 on one end and a nut 13 on the opposite end. Each jaw11 12 at the front of the cross-bolt 13 is grooved, as at b, vertically,these similar semicircular grooves together afiording a channel forreception of a shank portion of the handle-bar 14, that is thus heldupright for manipulation. Equal shoulders b are formed immediatelyforward of the grooves 11 by an equal reduction in thickness of the jawsin the portions that extend away from the shoulders b. Upon the outerside of the jaw 12 a cam-shoulder 0 is formed, which is of greatestprojection at the upper edge of the jaw 12 and thence graduallydiminishes as it curves down toward thelower edge thereof.

A cam-lever 15, having a cam-head 15 on one end, is mounted upon thebolt 13, the perforation in the cam-head being eccentric to its edge,and, as shown, the body of the camhead is given wedge shape, thethickest edge of which is farthest removed from the perforation of thecam-head.

The inner surfaces of the opposite end portions of the jaws 11 12 aresloped from the bolt-holes therein to the ends of the jaws, as shown atd, and as the bolt 13 fits loosely in the holes it is inserted in thejaws and permitted to rock on it, so as to spread them apart in advanceof the shoulders b. Upon the forward inner surface of the jaw 11 twostuds 6 are projected therefrom and spaced apart transversely.

There are mating sockets 6 formed in the jaw 12 oppositely from thestuds 6, and the latter may enter their ends-within said sockets whenthe jaws are rocked toward each other at their forward ends.

In the stub end of-the saw 10, which is to be clamped by the device justdescribed, two perforations e are formed, which will receive the studse,'this engagement of parts being readily effected if the cam-lever isadjusted so as to remove the cam-swell on its head from thecam-shoulderc, as indicatedin Fig. 3.

It will be seen that if the jaw 12 is rocked on the bolt 13, so as toclamp the stub end of the saw between the portions of the jaws 11 12,which are extended forwardly of the shoulders b after insertion of thestuds e into the perforations c, this :clamping adjustment may beenforced and rendered reliable by rocking the cam-lever 15 into theposition shown in Figs. 1 and 2, which will dispose the thicker portionof the cam-head 15 in contact with the cam-shoulder c, and the bearingof the cam-head thereon will obviously pull upon the bolt 13, so as toclamp the saw between the jaws.

The provision of the nut enables the adj ustment of the jaws 11 12 andlever 15 relatively to each other, so that wear of the camhead 15 andcam-shoulder 0 may be compensated for in an obvious manner.

Having fully described my invention, I claim as new and desire to secureby Letters Patent 1. A saw-handle clamp, comprising two jaws, a boltrockably connecting said jaws, a cam-lever adapted to draw opposed endsof the jaws toward each other, and a handle-bar clamped between thejaws.

2. A saw-hand1e clamp, comprising two jaws, a bolt rockably connectingsaid jaws, a cam-shoulder projecting from the outer side of one jaw, acam-lever pivoted on the bolt and adapted to press the cam-shoulder whenrocked toward it, and a handle-bar clamped between the jaws.

3. A saw-handle clamp, comprising two jaws adapted to receive the stubend of a sawblade between inner faces of their forward ends, studs onone of said faces that may pass through perforations, in the stub end, abolt rockably connecting said jaws, a camshoulder projected from theouter side of one jaw, a cam-lever pivoted on the bolt and adapted topress the cam shoulder when rocked toward it, and a handle-bar clampedin grooves oppositely formed in the jaws and extended upright therefrom.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN ALBERT HALE.

Witnesses:

HENRY DANIELS, MONROE LANG.

